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Roger Perkin

Network Automation Architect

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GNS3

GNS3 100% CPU Usage – Just hit Enter!

If like thousands of network engineers around the world you use GNS3 you will have come across the 100% CPU Usage problem. We all know know how to set the idle-pc and most of the time that works, but …

GNS3 Tutorial – How to run INE’s CCIE Troubleshooting topology

This GNS3 Tutorial was written so others can benefit from my long hours trying to make the 32 router INE CCIE troubleshooting topology work in my GNS3 environment. Note: This post is probably out of …

GNS3 Video Training Course

“A positive mind finds a way it can be done; a negative mind looks for all the ways it can’t be done.” Napoleon Hill Hands-On Practice – GNS3 Video Training Course I remember the “Music Man” …

GNS3 Duplex Mismatch – How to stop the log message

If you have run GNS3 for any time you will have most likely come across the error %CDP-4-DUPLEX_MISMATCH or GNS Duplex mismatch. With physical cisco hardware when two devices are connected together …

GNS3 Workbench is Awesome!

If you are studying for any kind of Cisco exam then you have probably come across GNS3. (If not you are missing out on something great and you should check it out at www.gns3.net) GNS3 is a graphical …

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